Feature/lab6

.github/pull_request_template.md

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+## Goal
+What is the purpose of this PR?
+
+## Changes
+What was changed?
+
+## Testing
+How was it tested?
+
+### Checklist
+- [ ] Clear, descriptive PR title
+- [ ] Documentation/README updated (if needed)
+- [ ] No secrets or large temporary files committed

labs/submission4.md

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+# Lab 4 — Submission
+
+## Task 1 — Operating System Analysis
+
+---
+
+### 1.1 Boot Performance Analysis
+
+```text
+systemd-analyze
+Startup finished in 3.212s (userspace)
+graphical.target reached after 3.159s in userspace.
+```
+
+```text
+systemd-analyze blame | head -n 10
+6.849s apt-daily-upgrade.service
+1.487s landscape-client.service
+751ms dev-sdd.device
+659ms snapd.seeded.service
+513ms snapd.service
+383ms wsl-pro.service
+```
+
+```text
+uptime
+16:43:28 up 9 min, 1 user, load average: 0.02, 0.06, 0.02
+```
+
+```text
+w
+USER     TTY      LOGIN@   IDLE   WHAT
+krasand  pts/1    16:34    9:23   -bash
+```
+
+**Observations:**
+
+- The system booted in approximately 3 seconds (userspace), which is expected for WSL.
+- The longest starting service was `apt-daily-upgrade.service`.
+- Load average values are very low, indicating the system is mostly idle.
+- Only one active user session is present.
+
+---
+
+### 1.2 Process Forensics
+
+```text
+ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%mem | head -n 6
+613   1   /usr/bin/python3 ...   0.9  0.0
+217   1   /usr/bin/python3 ...   0.6  0.0
+897   1   /usr/libexec/packagekitd 0.5 0.0
+```
+
+```text
+ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%cpu | head -n 6
+1   0   /sbin/init   0.3  0.3
+613 1   /usr/bin/python3 ... 0.9 0.0
+```
+
+**Top memory-consuming process:**  
+`/usr/bin/python3` (system service process).
+
+**Observations:**
+
+- Memory and CPU usage are minimal.
+- The system is not under load.
+- Processes consuming memory are mostly background services.
+
+---
+
+### 1.3 Memory Analysis
+
+```text
+free -h
+Mem: 3.3Gi total, 440Mi used, 2.8Gi free
+Swap: 1.0Gi total, 0B used
+```
+
+```text
+MemTotal: 3459304 kB
+MemAvailable: 3008040 kB
+SwapTotal: 1048576 kB
+```
+
+**Observations:**
+
+- Most memory is available (~2.9Gi).
+- Swap is configured but not used.
+- The system has sufficient free memory.
+
+---
+
+### 1.4 User Sessions
+
+```text
+who -a
+system boot 2026-02-27 16:34
+krasand pts/1 2026-02-27 16:34
+```
+
+```text
+last -n 5
+reboot system boot 6.6.87.2-microsoft ...
+```
+
+**Observations:**
+
+- Only one user session is active.
+- Recent system activity shows WSL reboots.
+- No unusual login activity detected.
+
+---
+
+## Task 2 — Networking Analysis
+
+---
+
+### 2.1 Network Path Tracing
+
+```text
+traceroute github.com
+1  172.26.160.XXX
+2  10.240.16.XXX
+3  10.250.0.XXX
+...
+18 r1-fra3-de.as5405.net (94.103.180.24)
+19 cust-sid436.fra3-de.as5405.net (45.153.82.37)
+```
+
+```text
+dig github.com
+
+ANSWER SECTION:
+github.com.    IN  A  140.82.121.4
+```
+
+**Observations:**
+
+- The route includes private internal network hops (10.x.x.x and 172.x.x.x) before reaching public internet routers.
+- DNS resolution confirms `github.com` resolves to IP address `140.82.121.4`.
+
+---
+
+### 2.2 Packet Capture (DNS Traffic)
+
+```text
+sudo tcpdump -c 5 -i any 'port 53' -nn
+
+Out IP 172.26.162.XXX.58057 > 172.26.160.XXX.53: A? google.com.
+In  IP 172.26.160.XXX.53 > 172.26.162.XXX.58057: A 172.217.19.238
+```
+
+**Observations:**
+
+- The packet capture shows a DNS query for `google.com`.
+- The response contains the resolved IP address.
+- Local IP addresses were partially masked for privacy.
+
+---
+
+### 2.3 Reverse DNS Lookup
+
+```text
+dig -x 8.8.4.4
+
+ANSWER SECTION:
+4.4.8.8.in-addr.arpa. PTR dns.google.
+```
+
+```text
+dig -x 1.1.2.2
+
+status: NXDOMAIN
+```
+
+**Observations:**
+
+- The IP address `8.8.4.4` resolves to `dns.google`, confirming it belongs to Google DNS.
+- The IP address `1.1.2.2` does not have a PTR record (NXDOMAIN).
+- Reverse DNS depends on whether a PTR record is configured for the IP address.

labs/submission5.md

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+# Lab 5 --- Virtualization and System Analysis
+
+## Platform
+
+Virtual Machine running **Ubuntu 24.04 LTS** inside **Oracle
+VirtualBox**.
+
+------------------------------------------------------------------------
+
+# Task 2 --- System Analysis
+
+## Operating System Information
+
+### Command
+
+    uname -a
+
+### Output
+
+    Linux andrey-VirtualBox 6.17.0-14-generic #14~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Jan 15 15:52:10 UTC x86_64 x86_64 x86_64 GNU/Linux
+
+### Detailed OS information
+
+Command
+
+    cat /etc/os-release
+
+Output
+
+    PRETTY_NAME="Ubuntu 24.04.4 LTS"
+    NAME="Ubuntu"
+    VERSION_ID="24.04"
+    VERSION="24.04.4 LTS (Noble Numbat)"
+    VERSION_CODENAME=noble
+    ID=ubuntu
+    ID_LIKE=debian
+
+### Conclusion
+
+The system is running **Ubuntu 24.04.4 LTS (Noble Numbat)**.
+
+------------------------------------------------------------------------
+
+# CPU Information
+
+### Command
+
+    lscpu
+
+### Key Information
+
+-   Architecture: **x86_64**
+-   CPU Model: **AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx**
+-   CPU cores allocated to VM: **2**
+-   Virtualization type: **full**
+-   Hypervisor vendor: **KVM**
+
+### Conclusion
+
+The virtual machine is using **2 virtual CPU cores provided by the host
+machine**.
+
+------------------------------------------------------------------------
+
+# Memory Information
+
+### Command
+
+    free -h
+
+### Output
+
+    Mem:   3.8Gi total
+    Used:  1.0Gi
+    Free:  1.3Gi
+    Swap:  3.8Gi
+
+### Conclusion
+
+The virtual machine has:
+
+-   **3.8 GB RAM**
+-   **3.8 GB swap memory**
+
+Memory usage is relatively low.
+
+------------------------------------------------------------------------
+
+# Storage Information
+
+### Command
+
+    lsblk
+
+### Output
+
+    sda   25G disk
+    └─sda2 25G mounted on /
+
+### Disk Usage
+
+Command
+
+    df -h
+
+Output
+
+    Filesystem      Size  Used Avail Use%
+    /dev/sda2        25G  9.5G   14G  41%
+
+### Conclusion
+
+The system uses a **25 GB virtual disk**, with **14 GB available free
+space**.
+
+------------------------------------------------------------------------
+
+# Network Configuration
+
+### Command
+
+    ip a
+
+### Key Information
+
+Network interface:
+
+    enp0s3
+
+IP address:
+
+    10.0.2.15
+
+### Conclusion
+
+The VM is connected to the network using **VirtualBox NAT networking**.
+
+------------------------------------------------------------------------
+
+# Virtualization Detection
+
+### Command
+
+    systemd-detect-virt
+
+### Output
+
+    oracle
+
+### Conclusion
+
+The operating system correctly detects that it is running inside
+**Oracle VirtualBox virtualization environment**.
+
+------------------------------------------------------------------------
+
+# Final Summary
+
+This lab demonstrated system inspection inside a virtual machine
+environment.
+
+The analyzed system has:
+
+-   Ubuntu **24.04 LTS**
+-   **2 virtual CPU cores**
+-   **\~4 GB RAM**
+-   **25 GB virtual disk**
+-   NAT network configuration
+-   Virtualization platform: **Oracle VirtualBox**
+
+The system tools successfully detected the virtualization environment
+and provided detailed information about system resources.