Network Covert Channel Analysis
mukul975/Anthropic-Cybersecurity-Skills
Detects DNS tunneling, ICMP exfiltration and HTTP-based covert channels in packet captures and DNS logs when hunting for hidden command-and-control traffic.
Guides authorized packet capture and analysis with TShark, Wireshark's command-line tool, for security investigations, malware detection and forensic examination of network traffic.
Install TShark Traffic Analysis
$ npx skills add AgentSecOps/SecOpsAgentKit --skill analysis-tshark -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install AgentSecOps/SecOpsAgentKit analysis-tshark --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/AgentSecOps/SecOpsAgentKit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/offsec/analysis-tshark .claude/skills/analysis-tshark && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "analysis-tshark" agent skill from https://github.com/AgentSecOps/SecOpsAgentKit/tree/main/skills/offsec/analysis-tshark into .claude/skills/analysis-tshark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analysis-tshark", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/AgentSecOps/SecOpsAgentKit/tree/main/skills/offsec/analysis-tsharkType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add AgentSecOps/SecOpsAgentKit --skill analysis-tshark -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install AgentSecOps/SecOpsAgentKit analysis-tshark --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AgentSecOps/SecOpsAgentKit.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/offsec/analysis-tshark .agents/skills/analysis-tshark && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "analysis-tshark" agent skill from https://github.com/AgentSecOps/SecOpsAgentKit/tree/main/skills/offsec/analysis-tshark into .agents/skills/analysis-tshark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analysis-tshark", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add AgentSecOps/SecOpsAgentKit --skill analysis-tshark -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install AgentSecOps/SecOpsAgentKit analysis-tshark --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AgentSecOps/SecOpsAgentKit.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/offsec/analysis-tshark .cursor/skills/analysis-tshark && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "analysis-tshark" agent skill from https://github.com/AgentSecOps/SecOpsAgentKit/tree/main/skills/offsec/analysis-tshark into .cursor/skills/analysis-tshark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analysis-tshark", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/AgentSecOps/SecOpsAgentKit.git --path skills/offsec/analysis-tshark--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add AgentSecOps/SecOpsAgentKit --skill analysis-tshark -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install AgentSecOps/SecOpsAgentKit analysis-tshark --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AgentSecOps/SecOpsAgentKit.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/offsec/analysis-tshark .gemini/skills/analysis-tshark && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "analysis-tshark" agent skill from https://github.com/AgentSecOps/SecOpsAgentKit/tree/main/skills/offsec/analysis-tshark into .gemini/skills/analysis-tshark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analysis-tshark", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install AgentSecOps/SecOpsAgentKit analysis-tsharkInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add AgentSecOps/SecOpsAgentKit --skill analysis-tshark -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/AgentSecOps/SecOpsAgentKit.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/offsec/analysis-tshark .github/skills/analysis-tshark && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "analysis-tshark" agent skill from https://github.com/AgentSecOps/SecOpsAgentKit/tree/main/skills/offsec/analysis-tshark into .github/skills/analysis-tshark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analysis-tshark", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add AgentSecOps/SecOpsAgentKit --skill analysis-tshark -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install AgentSecOps/SecOpsAgentKit analysis-tshark --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AgentSecOps/SecOpsAgentKit.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/offsec/analysis-tshark .opencode/skills/analysis-tshark && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "analysis-tshark" agent skill from https://github.com/AgentSecOps/SecOpsAgentKit/tree/main/skills/offsec/analysis-tshark into .opencode/skills/analysis-tshark/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "analysis-tshark", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
analysis-tshark- GitHub stars
- 219
- Used in
- 1 other repo
- Token cost
- ~4.8k tokens
- SKILL.md length
- 697 words
- Files
- 6 (incl. references, assets)
- Skills in repo
- 24
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Guides authorized packet capture and analysis with TShark, Wireshark's command-line tool, for security investigations, malware detection and forensic examination of network traffic.
- Works in 10 steps: Authorization Verification → Interface Discovery → Basic Packet Capture → …
- Investigating a suspected security incident from packet captures
- SKILL.md covers Overview, Quick Start, Core Workflow and Security Considerations, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
The skill covers authorized security operations with TShark, including traffic analysis, malware detection, artifact extraction and forensic examination. It warns that captures can expose sensitive information and may only be made with proper authorization and legal compliance. Its checklist has eight steps: verify authorization, identify the interface and requirements, capture with filters, analyze packets for security indicators, extract artifacts such as files, credentials and sessions, document findings, store capture files securely and clean up sensitive data under the retention policy.
The first step calls for written authorization, a check of wiretapping and privacy law, data handling and retention rules, a documented capture scope of interfaces, duration and filters, and secure storage. After that come interface discovery with `tshark -D`, basic capture with count, duration, file output and ring buffer options, and BPF capture filters. The folder bundles a workflow checklist, an example, a CI config template and a rule template, and the excerpt is cut off in the filter section.
When your agent uses it
- Investigating a suspected security incident from packet captures
- Capturing and filtering traffic on an authorized network segment
- Examining a capture file during a forensic review
- Checking whether traffic on a host is properly encrypted
Example prompts
- “Walk me through capturing HTTP traffic on eth0 for ten minutes with a filter, writing to a file.”
- “Analyze incident.pcap for signs of malware command-and-control traffic.”
- “List the files and sessions that can be extracted from this authorized capture.”
- “Which interfaces can TShark capture on this host?”
Requirements
- TShark from Wireshark
- Written authorization to capture the traffic
- Elevated privileges for live capture
Workflow steps
10 steps, taken from the step headings in SKILL.md.
- Authorization Verification
- Interface Discovery
- Basic Packet Capture
- Capture Filters
- Display Filters
- Protocol Analysis
- Credential Extraction
- File Extraction
- Malware Detection
- Statistics and Reporting
What it can do on your machine
Read from SKILL.md and the folder at commit 6e25a4b. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are bash).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
wireshark.orgwiki.wireshark.orgattack.mitre.orgcsrc.nist.govnostarch.com
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
TShark Traffic Analysis loads about 4.8k tokens when it runs, and up to ~11k if it reads all its reference files. Until then it costs about 140 tokens; SKILL.md has 697 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NoteRuns commands with sudoSKILL.md:38
sudo tshark -i eth0 - NoteRuns commands with sudoSKILL.md:41
sudo tshark -i eth0 -c 100 -w capture.pcap - NoteRuns commands with sudoSKILL.md:87
sudo tshark -D - NoteRuns commands with sudoSKILL.md:90
sudo tshark -i eth0 - NoteRuns commands with sudoSKILL.md:91
sudo tshark -i wlan0 - NoteRuns commands with sudoSKILL.md:94
sudo tshark -i any - NoteRuns commands with sudoSKILL.md:97
sudo tshark -i eth0 -i wlan0 - NoteRuns commands with sudoSKILL.md:113
sudo tshark -i eth0 - NoteRuns commands with sudoSKILL.md:116
sudo tshark -i eth0 -c 1000 - NoteRuns commands with sudoSKILL.md:119
sudo tshark -i eth0 -a duration:60
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 697 words (~4,772 tokens).
“TShark is the command-line network protocol analyzer from the Wireshark project. It provides powerful packet capture and analysis capabilities for security investigations, forensic analysis, and network troubleshooting. This skill covers authorized security operations including traffic analysis, credential extraction, malware detection…”
- name
- analysis-tshark
- version
- 0.1.0
- maintainer
- sirappsec@gmail.com
- category
- offsec
- tags
- packet-capture, network-analysis, forensics, tshark, wireshark, traffic-analysis
- frameworks
- MITRE-ATT&CK, NIST
- dependencies.packages
- tshark, wireshark
- dependencies.tools
- tcpdump, python3
- references
- https://www.wireshark.org/docs/man-pages/tshark.html, https://wiki.wireshark.org/DisplayFilters, https://attack.mitre.org/techniques/T1040/
Files
SKILL.md and 5 other files (references, assets) in skills/offsec/analysis-tshark of AgentSecOps/SecOpsAgentKit.
- SKILL.md
- assets/.gitkeep
- assets/ci-config-template.yml
- assets/rule-template.yaml
- references/EXAMPLE.md
- references/WORKFLOW_CHECKLIST.md
Open the folder on GitHubat commit 6e25a4b
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in AgentSecOps/SecOpsAgentKit, which our catalogue first saw on October 7, 2026.
Compare with similar skills
TShark Traffic Analysis next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| TShark Traffic Analysis this skillAgentSecOps/SecOpsAgentKit | 219 | 1 repos | ~4.8k | Automated safety check: Notes | Custom licence | |
| Network Covert Channel Analysismukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~2k | Automated safety check: Pass | Apache-2.0 | |
| Dfirtransilienceai/communitytools | 559 | — | ~1.5k | Automated safety check: Pass | MIT | |
| Performing Network Packet Capture Analysismukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~2.3k | Automated safety check: Pass | Apache-2.0 | |
| Detecting Arp Poisoning In Network Trafficmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~3.8k | Automated safety check: Notes | Apache-2.0 | |
| Performing Network Traffic Analysis With Zeekmukul975/Anthropic-Cybersecurity-Skills | 34k | — | ~3.2k | Automated safety check: Notes | Apache-2.0 |
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Related
Works with
Categories
Questions about TShark Traffic Analysis
What does TShark Traffic Analysis do?
Guides authorized packet capture and analysis with TShark, Wireshark's command-line tool, for security investigations, malware detection and forensic examination of network traffic. The skill covers authorized security operations with TShark, including traffic analysis, malware detection, artifact extraction and forensic examination. It warns that captures can expose sensitive information and may only be made with proper authorization and legal compliance.
When should I use TShark Traffic Analysis?
TShark Traffic Analysis fits situations like: investigating a suspected security incident from packet captures; capturing and filtering traffic on an authorized network segment; examining a capture file during a forensic review; checking whether traffic on a host is properly encrypted.
How do I install TShark Traffic Analysis in Claude Code?
Run `npx skills add AgentSecOps/SecOpsAgentKit --skill analysis-tshark -a claude-code`. Or copy the skill folder (skills/offsec/analysis-tshark in AgentSecOps/SecOpsAgentKit) into .claude/skills/analysis-tshark in your project. Claude Code loads it when a task matches its description.
How do I install TShark Traffic Analysis in Codex?
Run `npx skills add AgentSecOps/SecOpsAgentKit --skill analysis-tshark -a codex`. Or copy the skill folder (skills/offsec/analysis-tshark in AgentSecOps/SecOpsAgentKit) into .agents/skills/analysis-tshark in your project. Codex loads it when a task matches its description.
Can I use TShark Traffic Analysis in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add AgentSecOps/SecOpsAgentKit --skill analysis-tshark -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/analysis-tshark, .gemini/skills/analysis-tshark, .github/skills/analysis-tshark and .opencode/skills/analysis-tshark in your project.
What does TShark Traffic Analysis need to run?
SKILL.md names no scripts, command-line tools or credentials: TShark Traffic Analysis is instructions for the agent only. Our summary lists: TShark from Wireshark; Written authorization to capture the traffic; Elevated privileges for live capture.
Does TShark Traffic Analysis access the network?
SKILL.md names 5 domains. As links in the text: wireshark.org, wiki.wireshark.org, attack.mitre.org, csrc.nist.gov and nostarch.com. This is read from the text; nothing was executed.
Is TShark Traffic Analysis safe to install?
Our automated static check of SKILL.md found notes only (runs commands with sudo), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does TShark Traffic Analysis use?
TShark Traffic Analysis has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does TShark Traffic Analysis use?
About 4.8k tokens (SKILL.md is roughly 19k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 6k tokens, read only when the agent opens those files.
What are the alternatives to TShark Traffic Analysis?
Skills that share tags, products or a category with TShark Traffic Analysis: Network Covert Channel Analysis (mukul975/Anthropic-Cybersecurity-Skills, 34k stars), Dfir (transilienceai/communitytools, 559 stars), Performing Network Packet Capture Analysis (mukul975/Anthropic-Cybersecurity-Skills, 34k stars) and Detecting Arp Poisoning In Network Traffic (mukul975/Anthropic-Cybersecurity-Skills, 34k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains TShark Traffic Analysis?
AgentSecOps (a GitHub organization) maintains it in AgentSecOps/SecOpsAgentKit, which has 219 GitHub stars. The repository holds 24 skills in this directory. The repository was last updated on April 15, 2026.
Source: AgentSecOps/SecOpsAgentKit on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.